--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-show-stack.t	Sat Jul 01 22:38:42 2017 -0700
@@ -0,0 +1,220 @@
+  $ cat >> $HGRCPATH << EOF
+  > [extensions]
+  > show =
+  > EOF
+
+  $ hg init repo0
+  $ cd repo0
+
+Empty repo / no checkout results in error
+
+  $ hg show stack
+  abort: stack view only available when there is a working directory
+  [255]
+
+Stack displays single draft changeset as root revision
+
+  $ echo 0 > foo
+  $ hg -q commit -A -m 'commit 0'
+  $ hg show stack
+    @  9f171 commit 0
+
+Stack displays multiple draft changesets
+
+  $ echo 1 > foo
+  $ hg commit -m 'commit 1'
+  $ echo 2 > foo
+  $ hg commit -m 'commit 2'
+  $ echo 3 > foo
+  $ hg commit -m 'commit 3'
+  $ echo 4 > foo
+  $ hg commit -m 'commit 4'
+  $ hg show stack
+    @  2737b commit 4
+    o  d1a69 commit 3
+    o  128c8 commit 2
+    o  181cc commit 1
+    o  9f171 commit 0
+
+Public parent of draft base is displayed, separated from stack
+
+  $ hg phase --public -r 0
+  $ hg show stack
+    @  2737b commit 4
+    o  d1a69 commit 3
+    o  128c8 commit 2
+    o  181cc commit 1
+   /   (stack base)
+  o  9f171 commit 0
+
+  $ hg phase --public -r 1
+  $ hg show stack
+    @  2737b commit 4
+    o  d1a69 commit 3
+    o  128c8 commit 2
+   /   (stack base)
+  o  181cc commit 1
+
+Draft descendants are shown
+
+  $ hg -q up 2
+  $ hg show stack
+    o  2737b commit 4
+    o  d1a69 commit 3
+    @  128c8 commit 2
+   /   (stack base)
+  o  181cc commit 1
+
+  $ hg -q up 3
+  $ hg show stack
+    o  2737b commit 4
+    @  d1a69 commit 3
+    o  128c8 commit 2
+   /   (stack base)
+  o  181cc commit 1
+
+working dir on public changeset should display special message
+
+  $ hg -q up 1
+  $ hg show stack
+  (empty stack; working directory is a published changeset)
+
+Branch point in descendants displayed at top of graph
+
+  $ hg -q up 3
+  $ echo b > foo
+  $ hg commit -m 'commit 5 (new dag branch)'
+  created new head
+  $ hg -q up 2
+  $ hg show stack
+   \ /  (multiple children)
+    |
+    o  d1a69 commit 3
+    @  128c8 commit 2
+   /   (stack base)
+  o  181cc commit 1
+
+  $ cd ..
+
+Base is stopped at merges
+
+  $ hg init merge-base
+  $ cd merge-base
+  $ echo 0 > foo
+  $ hg -q commit -A -m initial
+  $ echo h1 > foo
+  $ hg commit -m 'head 1'
+  $ hg -q up 0
+  $ echo h2 > foo
+  $ hg -q commit -m 'head 2'
+  $ hg phase --public -r 0:tip
+  $ hg -q up 1
+  $ hg merge -t :local 2
+  0 files updated, 1 files merged, 0 files removed, 0 files unresolved
+  (branch merge, don't forget to commit)
+  $ hg commit -m 'merge heads'
+
+TODO doesn't yet handle case where wdir is a draft merge
+
+  $ hg show stack
+    @  8ee90 merge heads
+   /   (stack base)
+  o  59478 head 1
+
+  $ echo d1 > foo
+  $ hg commit -m 'draft 1'
+  $ echo d2 > foo
+  $ hg commit -m 'draft 2'
+
+  $ hg show stack
+    @  430d5 draft 2
+    o  787b1 draft 1
+   /   (stack base)
+  o  8ee90 merge heads
+
+  $ cd ..
+
+Now move on to stacks when there are more commits after the base branchpoint
+
+  $ hg init public-rebase
+  $ cd public-rebase
+  $ echo 0 > foo
+  $ hg -q commit -A -m 'base'
+  $ hg phase --public -r .
+  $ echo d1 > foo
+  $ hg commit -m 'draft 1'
+  $ echo d2 > foo
+  $ hg commit -m 'draft 2'
+  $ hg -q up 0
+  $ echo 1 > foo
+  $ hg commit -m 'new 1'
+  created new head
+  $ echo 2 > foo
+  $ hg commit -m 'new 2'
+  $ hg -q up 2
+
+Newer draft heads don't impact output
+
+  $ hg show stack
+    @  eaffc draft 2
+    o  2b218 draft 1
+   /   (stack base)
+  o  b66bb base
+
+Newer public heads are rendered
+
+  $ hg phase --public -r '::tip'
+
+  $ hg show stack
+    o  baa4b new 2
+   /    (2 commits ahead)
+  :
+  :    (stack head)
+  : @  eaffc draft 2
+  : o  2b218 draft 1
+  :/   (stack base)
+  o  b66bb base
+
+If rebase is available, we show a hint how to rebase to that head
+
+  $ hg --config extensions.rebase= show stack
+    o  baa4b new 2
+   /    (2 commits ahead; hg rebase --source 2b218 --dest baa4b)
+  :
+  :    (stack head)
+  : @  eaffc draft 2
+  : o  2b218 draft 1
+  :/   (stack base)
+  o  b66bb base
+
+Similar tests but for multiple heads
+
+  $ hg -q up 0
+  $ echo h2 > foo
+  $ hg -q commit -m 'new head 2'
+  $ hg phase --public -r .
+  $ hg -q up 2
+
+  $ hg show stack
+    o  baa4b new 2
+   /    (2 commits ahead)
+  : o  9a848 new head 2
+  :/    (1 commits ahead)
+  :
+  :    (stack head)
+  : @  eaffc draft 2
+  : o  2b218 draft 1
+  :/   (stack base)
+  o  b66bb base
+
+  $ hg --config extensions.rebase= show stack
+    o  baa4b new 2
+   /    (2 commits ahead; hg rebase --source 2b218 --dest baa4b)
+  : o  9a848 new head 2
+  :/    (1 commits ahead; hg rebase --source 2b218 --dest 9a848)
+  :
+  :    (stack head)
+  : @  eaffc draft 2
+  : o  2b218 draft 1
+  :/   (stack base)
+  o  b66bb base